/*
 * Copyright (c) 2016-20017 Max Cong <savagecm@qq.com>
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once
#include "translib/tcpSocket.h"

namespace translib
{

class TcpServerDispatcher;

/**
 * @brief TCP server
 */
class TcpSession : public translib::TcpSocket, public std::enable_shared_from_this<TcpSession>
{
  public:
	TcpSession();

	/** get TCP server dispatcher */
	inline translib::TcpServerDispatcher *dispatcher() const
	{
		return _dispatcher;
	}

	/** get session ID */
	inline translib::SessionId id() const
	{
		return _id;
	}

	/**
	 * @brief attach session dispatcher and session
	 * @return 
	 */
	bool attach(
		translib::TcpServerDispatcher *dispatcher,
		translib::SessionId id,
		translib::SocketFd sock);

  protected:
	/**
	 * @brief 
	 * @details cal TcpServer::onSessionRead by default. 
	 * @see TcpServer::onSessionRead
	 */
	virtual void onRead();

  private:
	void handleEvent(short events);

	static void readCallback(struct bufferevent *bev, void *data);
	static void writeCallback(struct bufferevent *bev, void *data);
	static void eventCallback(struct bufferevent *bev, short events, void *data);

  private:
	translib::TcpServerDispatcher *_dispatcher;
	translib::SessionId _id;
};

typedef std::shared_ptr<TcpSession> TcpSessionPtr;

} /* namespace translib */
